• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
Hungry Healthy Happy
  • Christmas recipes
  • About
  • Recipe Index
  • FREE eBook
  • Contact
  • Subscribe
menu icon
go to homepage
  • Christmas recipes
  • About
  • Recipe Index
  • FREE eBook
  • Contact
  • Subscribe
  • Let's get social!

    • Facebook
    • Instagram
    • Pinterest
    • TikTok
    • Twitter
    • YouTube
  • search icon
    Homepage link
    • Christmas recipes
    • About
    • Recipe Index
    • FREE eBook
    • Contact
    • Subscribe
  • Let's get social!

    • Facebook
    • Instagram
    • Pinterest
    • TikTok
    • Twitter
    • YouTube
  • ×
    Hungry Healthy Happy » Recipes » 10 Minute Recipes

    Leftover Roast Beef Sandwich

    Published: Dec 19, 2020 · Modified: Sep 28, 2021 · Written by Dannii Martin · This post may contain affiliate links · 12 Comments

    153 shares
    • 112
    Jump to Recipe
    Leftover roast beef sandwich with a text title overlay.

    Make the most of your leftovers by making this epic Leftover Roast Beef Sandwich. Slices of melt in your mouth roast beef in between your favourite bread with spicy horseradish sauce, brie and cheddar, gherkins, spinach and sun-dried tomatoes. It is everything you could possibly want from a beef sandwich, but easy to adapt too.

    A hand holding two huge roast beef sandwiches.

    About this roast beef sandwich

    What's the best thing about making a huge roast dinner? The leftovers! We love a leftover sandwich, as they are easy to adapt with whatever you have in the fridge and they only take a couple of minutes to throw together.

    It's perfect for Christmas Day when you don't want to be away from the TV for long and this beef sandwich just ticks all the boxes.

    Roast beef sandwiches are ready in a matter of minutes and really hearty and filling.

    Looking for some other ways to use up leftovers? Try our Leftover Turkey Pasta, Leftover Turkey Curry, Turkey Soup or Turkey Quesadillas.

    Jump to:
    • About this roast beef sandwich
    • Ingredients and substitutions
    • How to make Roast Beef Sandwiches - Step by step
    • Roast beef
    • Variations
    • FAQs
    • Extra tips
    • More beef recipes
    • Recipe
    • Feedback

    Ingredients and substitutions

    All the ingredients needed for this recipe laid out with text overlay labels.
    • Bread - Any bread will work for this roast beef sandwich recipe. We like something really sturdy like sourdough, as there is lots of filling in this sandwich.
    • Roast beef - The star of this sandwich. We used leftovers from our Slow Cooker Roast Beef, but you could use leftovers from any roast beef our our Slow Cooker Beef Brisket.
    • Sauce - Beef and horseradish sauce are the perfect match. But if horseradish has a bit too much of a kick for you, then you could swap it. Try a mild mustard like wholegrain, or even use a chutney like caramelised onion or tomato and chilli.
    • Greens - We love anything that we can give a green boost to. We put spinach in for an iron boost, but you can use any salad greens. Iceberg, rocket, frisée, they all work.
    • Cheese - We went double cheese and added slices of brie and cheddar. However, you could use gruyere, goats cheese, Wensleydale, Swiss or stilton. Really, anything that you would find on a cheese board.
    • Toppings - This is where you can really adapt things and use up whatever you have left in the fridge. We used sun-dried tomatoes and gherkins (pickles). But you could also add olives, artichokes or roast up some cherry tomatoes in garlic.

    A full ingredients list with measurements is in the recipe card below.

    How to make Roast Beef Sandwiches - Step by step

    One: Butter the bread and add a layer of spinach.

    A slice of buttered bread with salad leaves on it.

    Two: Add the leftover roast beef and spread with with horseradish sauce.

    Slices of roast beef with horseradish sauce added to the sandwich.

    Three: Top with sun-dried tomatoes and gherkins.

    Slices gherkins and sun-dried tomatoes added.

    Four: Add the cheese and top with another slice of bread and enjoy.

    Slices of cheddar and brie added to the sandwich.

    Roast beef

    The roast beef really is the star of this sandwich, so you need to make sure it's really special. I mean, you could buy ready cooked slices from the deli if you are wanting to save time, but the beauty of this sandwich is that it makes use of leftovers from a Sunday roast.

    This recipe uses leftovers from our Slow Cooker Roast Beef. Tender, melt in your mouth slices of beef in gravy, makes the perfect filling for a sandwich.

    So, make more than you think you need so you can put leftovers in this sandwich. You could also use leftovers from our Slow Cooker Beef Brisket.

    Roast beef sandwiches on a wooden serving board with potato crisps and a bowl of horseradish sauce.

    Variations

    The great thing about a sandwich like this is how easy it is to adapt. Our beef sandwich is perhaps a bit random, but it was born out of whatever we had left in the fridge. That's the best thing about a leftovers sandwich.

    When it comes to bread, we are big fans of sourdough. It's sturdy, which is a must for a fully loaded sandwich like this. However, you can you your favourite loaf.

    Something like tiger bread would work well, as it is nice and buttery. You could even do something a little different and use ciabatta, bagel or a croissant.

    Greens give some much needed colour to this sandwich, and we used spinach to make it an iron packed meal along with the beef.

    You could use any lettuce, however we wouldn't recommend using rocket (arugula), unless you like really peppery flavours, as alongside the horseradish it might be a bit too much. Something like iceberg is nice as it has some crunch to it.

    What is a sandwich without cheese? We have gone all out and added brie and cheddar. Seeing as this is a leftovers sandwich, why not use it as an opportunity to use leftovers from the Christmas cheeseboard.

    We then added slices of gherkins (pickles) and some sun-dried tomatoes for a burst of flavour. You could add roasted tomatoes or olives, caramelised onions and artichokes.

    It really is a great way to use up leftovers from the Christmas buffet. We love adding some Quick Pickled Red Onions to a roast beef sandwich too.

    Two stacks of beef sandwiches with pickles on top.

    FAQs

    How to store a leftover roast beef sandwich?

    You can store all the individual parts of the sandwich separately, but the sandwich itself should be made from fresh. The leftover roast beef will keep in an air tight container for up to 5 days. Try to use really fresh bread, as you don't want the whole sandwich falling apart as you try to bite into it. 

    Can you freeze a leftover roast beef sandwich?

    No, this sandwich would not freeze well.

    What to serve with this roast beef sandwich?

    This is a pretty filling sandwich by itself, however if you did want to serve it with anything then we recommend our Homemade Garlic Crisps or Sweet Potato Fries.

    heart icon

    Extra tips

    • If you really like peppery flavours, then add some slices of radish to this sandwich.
    • Sliced pickled beetroot is also a great addition to this sandwich.
    • If you want to keep it simple when it comes to the sauce, then you can just add mayo. Or maybe something a little more special like truffle mayo.
    • A thin layer of gravy on the bread also really works well as a sauce. Kind of like in that episode of Friends with Ross' sandwich.
    • Any greens work, but something like spinach or kale would add a real vitamin boost.
    • Slices of avocado add a nice layer of creaminess and a boost of healthy fats.

    More beef recipes

    • Two Slow Cooker Beef Tacos on a wooden board with two lime wedges
      Shredded Beef Tacos
    • Slow cooker beef ragu in a bowl with a fork.
      Slow Cooker Beef Ragu
    • Slow Cooker Beef Casserole and mashed potato in a white dish.
      The BEST Slow Cooker Beef Casserole
    • Slow cooker beef curry and rice in a round bowl.
      Slow Cooker Beef Curry

    If you’ve tried this roast beef sandwich recipe, let us know how you got on in the comments below.
    Tag us in your creations on Instagram @hungryhealthyhappy - Use the hashtag #hungryhealthyhappy too.

    Recipe

    Leftover roast beef sandwich stacked up with a whole gherkin on top.

    Leftover Roast Beef Sandwich

    By: Dannii Martin
    Leftover Roast Beef Sandwich - Easy to make and delicious! Spicy horseradish sauce, brie, cheddar, gherkins, spinach and sun-dried tomatoes.
    5 from 15 votes
    Pin Print Save recipe Recipe saved!
    Course: Lunch
    Cuisine: British
    Prep: 5 minutes mins
    Total: 5 minutes mins
    Servings: 2 servings
    Calories: 825kcal
    Allergens:
    An illustration of a carton of milk.
    Dairy
    An illustration of two ears of wheat.
    Gluten
    An illustration of a cow's head.
    Meat
    Prevent your screen from going dark

    Ingredients

    • 4 slice Sourdough bread
    • 4 slice Roast beef
    • 40 g (2.75 tablespoon) Butter
    • 30 g (1 cups) Spinach
    • 4 teaspoon Horseradish sauce
    • 6 Sun-dried tomatoes
    • 4 Gherkins - sliced
    • 100 g (3.5 oz) Cheese slices
    • 40 g (1.4 oz) Brie

    Instructions

    • Spread 40 g Butter over 4 slice Sourdough bread and divide 30 g Spinach between two slices.
    • Add 4 slice Roast beef and spread with with 4 teaspoon Horseradish sauce.
    • Top with 6 Sun-dried tomatoes, 4 Gherkins40 g Brie and 100 g Cheese slices.
    • Top with another slice of bread and enjoy.

    Recipe tips

    • If you really like peppery flavours, then add some slices of radish to this sandwich.
    • Sliced pickled beetroot is also a great addition to this sandwich.
    • If you want to keep it simple when it comes to the sauce, then you can just add mayo. Or maybe something a little more special like truffle mayo.
    • A thin layer of gravy on the bread also really works well as a sauce. Kind of like in that episode of Friends with Ross' sandwich.
    • Any greens work, but something like spinach or kale would add a real vitamin boost.
    • Slices of avocado add a nice layer of creaminess and a boost of healthy fats.

    Nutritional Information

    Serving: 1sandwich | Calories: 825kcal | Carbohydrates: 73g | Protein: 45g | Fat: 40g | Saturated Fat: 24g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 11g | Trans Fat: 1g | Cholesterol: 129mg | Sodium: 2316mg | Potassium: 726mg | Fiber: 4g | Sugar: 9g | Vitamin A: 2521IU | Vitamin C: 34mg | Calcium: 670mg | Iron: 8mg

    The nutritional information provided is approximate and is calculated using online tools. Information can vary depending on various factors, but we have endeavoured to be as accurate as possible.

    You'll love these too...

    • Merry mix in a glass jar.
      Merry Mix (Christmas Snack Mix)
    • A bowl of halloween dip decorated with a sour cream spider web.
      Halloween Dip
    • A bowl of coriander chutney with a small spoon in it.
      Coriander Chutney
    • A pile of Halloween Tortilla Chips next to a Jack O'Lantern.
      Halloween Tortilla Chips

    Reader Interactions

    Comments

    1. Jess

      January 29, 2021 at 1:56 pm

      5 stars
      Made these yesterday with my leftover roast. Such a perfect way to use up the leftovers. Delish!

      Reply
    2. Amanda Wren-Grimwood

      January 29, 2021 at 11:06 am

      5 stars
      This sandwich is packed full of my favourite things - perfect treat!

      Reply
    3. Mahy

      December 19, 2020 at 8:42 pm

      5 stars
      I love stocking on recipes using leftovers. It always helps whenever I need to plan in advance and don't have enough time. Great sandwich!

      Reply
    4. Alison

      December 19, 2020 at 7:36 pm

      5 stars
      That spicy horseradish sauce is everything! It really makes leftover roast beef transform into something spectacular!

      Reply
    5. Michelle

      December 19, 2020 at 6:49 pm

      5 stars
      The perfect yummy way to use up leftovers!

      Reply
    6. Healing Tomato

      December 19, 2020 at 6:20 pm

      5 stars
      I love that you made a sandwich out of a leftover beef! This looks so amazing and hearty. Bookmarking this to share with my friends.

      Reply
    7. Alina

      December 19, 2020 at 6:16 pm

      5 stars
      This is such a good lunch idea! This is the best and easiest idea on using leftover roast after holidays.

      Reply
    8. Julia

      December 19, 2020 at 2:24 pm

      This is my kind of a sandwich! I have some leftover roasted pork tenderloin so I will be making this for our dinner tonight :)

      Reply
    9. Julie Menghini

      December 19, 2020 at 2:17 pm

      5 stars
      We have a roast that I'm cooking this weekend so this is the perfect timing. Nothing about this sandwich speaks leftovers. It speaks 5-star deli! I never think to put pickles in my sandwich. What a great addition!

      Reply
    10. Jen

      December 19, 2020 at 2:08 pm

      5 stars
      Oh my goodness, I love you idea of roasted tomatoes and olives for this sandwich! I know we'll all be fighting over the leftovers.

      Reply
    11. Claudia Lamascolo

      December 19, 2020 at 11:29 am

      5 stars
      What a great addition the pickles really made this leftover beef go from 1 to 10 in flavor! Great idea!

      Reply
    12. Emmeline

      December 19, 2020 at 8:35 am

      5 stars
      Couldn't agree more - leftovers are the best! Especially when you can have them on this sandwich... yum!

      Reply

    Made this recipe? Let me know! Cancel reply

    Your email address will not be published. Required fields are marked *

    Recipe Rating




    This site uses Akismet to reduce spam. Learn how your comment data is processed.

    Primary Sidebar

    Leftover roast beef sandwich with a text title overlay.
    Dannii in hat and glasses stood on a beach.

    Welcome! My name is Dannii. Here you will find easy family recipes with a healthy twist. Established in 2011, Hungry Healthy Happy has become one of the UK's most popular food blogs, with two successful recipe books published.

    About HHH»

    Christmas Recipes

    • Roast turkey breast sliced up on a serving board.
      Easy Roast Turkey Breast
    • Air fryer pigs in blankets on a plate with some thyme.
      Air Fryer Pigs in Blanket
    • Nutella Puff Pastry Christmas Tree on a wooden serving board.
      Nutella Puff Pastry Christmas Tree
    • A wooden serving board with nine Santa Hat Brownies
      Strawberry Santa Hat Brownies
    • Four different Christmas drinks in a collage.
      Christmas Drinks
    • Kid's Christmas Snacks on a wooden serving board.
      Kid's Christmas Snacks

    Books

    The Hungry Healthy Happy book cover.
    The healthy slow cooker book cover.

    Featured in

    Collage of media outlet logos.

    Popular Recipes

    • A pile of air fryer chips.
      The Best Air Fryer Chips
    • 10 Minute Chickpea and Spinach Curry on a blue and white plate.
      10 Minute Chickpea and Spinach Curry
    • Easy tomato pasta sauce coating tagliatelle on a white plate.
      Easy Tomato Pasta Sauce
    • Slow cooker beef brisket sliced up on a serving board.
      Slow Cooker Beef Brisket

    Footer

    Leftover roast beef sandwich with a text title overlay.

    Help & Information

    • Contact
    • Privacy Policy
    • Accessibility Policy
    • Advertising
    • Blog

    About us

    • About us
    • Newsletter Sign Up!
    • Press enquiries
    • Web Stories
    • FAQ

    Follow us

    • Twitter
    • Facebook
    • Instagram
    • Pinterest
    • TikTok
    • YouTube

    Featured in

    A selection of publications that Hungry Healthy Happy has been featured in

    As an Amazon Associate we earn from qualifying purchases.

    Copyright © 2011-2023 Hungry Healthy Happy • All Rights Reserved • Site Design by D Martin

    • 112
    153 shares